Question

difference between pure and polluted air(in points with shortness )​

Answer 1

Answer:

Pure air is free from germs and harmful gases. It contains 78% nitrogen, 21% oxygen and small amount of other gases and dust particles. Polluted air contains harmful gases and unwanted substances.

Answer 2

$\huge \mathcal \pink{ ༄✿Aɴsᴡᴇʀ࿐ \implies}$

In the process of fertilisation, sperms come in contact with an ova (egg). One of the sperms may fuse with the egg. The nuclei of the sperm and the egg fuse to form a single nucleus resulting in the formation of a fertilised egg called zygote. In human being, the fertilisation takes place inside the female body, known as internal fertilisation.

$\huge \large\mathfrak \color{blue}{Hope \: it's \: help \: you}$

$\boxed{ \sf \green{Plz \: Mark \: as \: Brainlist \: And \: Thanks \: My \: Answer}}$